0.9.3.57:

[sbcl.git] / src / assembly / ppc / array.lisp

diff --git a/src/assembly/ppc/array.lisp b/src/assembly/ppc/array.lisp
index 4b68ace..e94fa84 100644 (file)
--- a/src/assembly/ppc/array.lisp
+++ b/src/assembly/ppc/array.lisp
@@ -13,25 +13,30 @@
 (in-package "SB!VM")
 \f
 (define-assembly-routine (allocate-vector
-                         (:policy :fast-safe)
-                         (:translate allocate-vector)
-                         (:arg-types positive-fixnum
-                                     positive-fixnum
-                                     positive-fixnum))
-                        ((:arg type any-reg a0-offset)
-                         (:arg length any-reg a1-offset)
-                         (:arg words any-reg a2-offset)
-                         (:res result descriptor-reg a0-offset)
+                          (:policy :fast-safe)
+                          (:translate allocate-vector)
+                          (:arg-types positive-fixnum
+                                      positive-fixnum
+                                      positive-fixnum))
+    ((:arg type any-reg a0-offset)
+     (:arg length any-reg a1-offset)
+     (:arg words any-reg a2-offset)
+     (:res result descriptor-reg a0-offset)
 
-                         (:temp ndescr non-descriptor-reg nl0-offset)
-                         (:temp pa-flag non-descriptor-reg nl3-offset)
-                         (:temp vector descriptor-reg a3-offset))
+     (:temp ndescr non-descriptor-reg nl0-offset)
+     (:temp pa-flag non-descriptor-reg nl3-offset)
+     (:temp vector descriptor-reg a3-offset))
   (pseudo-atomic (pa-flag)
-    (inst ori vector alloc-tn sb!vm:other-pointer-lowtag)
-    (inst addi ndescr words (* (1+ sb!vm:vector-data-offset) sb!vm:n-word-bytes))
+    (inst ori vector alloc-tn other-pointer-lowtag)
+    ;; boxed words == unboxed bytes
+    (inst addi ndescr words (* (1+ vector-data-offset) n-word-bytes))
     (inst clrrwi ndescr ndescr n-lowtag-bits)
     (inst add alloc-tn alloc-tn ndescr)
-    (inst srwi ndescr type sb!vm:word-shift)
-    (storew ndescr vector 0 sb!vm:other-pointer-lowtag)
-    (storew length vector sb!vm:vector-length-slot sb!vm:other-pointer-lowtag))
+    (inst srwi ndescr type word-shift)
+    (storew ndescr vector 0 other-pointer-lowtag)
+    (storew length vector vector-length-slot other-pointer-lowtag))
+  ;; This makes sure the zero byte at the end of a string is paged in so
+  ;; the kernel doesn't bitch if we pass it the string.
+  (storew zero-tn alloc-tn 0)
   (move result vector))
+